SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Single Phase, 10kA at 120/240V AC
The SQUARE D QO240 is a 40 A, 2-pole miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It is rated for single-phase operation at 120/240V AC with a…
SKU 3G-OTH-21877
Also listed as: QO 240 · QO-240
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SQUARE D QO240 is a 40 A, 2-pole miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It is rated for single-phase operation at 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC.
Frequently Asked Questions
What is the SQUARE D QO240 miniature circuit breaker used for?
The SQUARE D QO240 is a 40 A, 2-pole miniature circuit breaker used for overcurrent protection in residential and commercial single-phase electrical systems. It installs in QO Load Centers and NQ Panelboards to protect branch circuits rated 120/240V AC.
What are the specifications of the SQUARE D QO240 circuit breaker?
The SQUARE D QO240 is rated 40 A, 120/240V AC, single phase, with a maximum AIR rating of 10kA at 120/240V AC. It is a 2-pole plug-in breaker from the QO Series, designed for use with QO Load Centers and NQ Panelboards.
Where to buy SQUARE D QO240 circuit breakers worldwide?
3G Electric supplies the SQUARE D QO240 miniature circuit breaker worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to install the SQUARE D QO240 circuit breaker?
To install the SQUARE D QO240, ensure the load center is de-energized. Align the breaker's plug-in jaws with the bus bar in a QO Load Center or NQ Panelboard and press firmly until it snaps into place. Verify torque per manufacturer guidelines.
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Common applications for SQUARE DSQUARE D Products
3G Electric supplies SQUARE D qo series, plug-in square d miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
